I have several questions about networking KVM VMs. I running CentOS5 VMs 
on Fedora 9.

1) How do you setup Host Only networking in KVM? 
2) Does KVM support multiple subnets? If so how do you specify the IP 
address of a KVM subnet?
3) Does KVM support shared directories (i.e. host directories that can be 
mounted as partitions in the VM)? If so how do you set them up?

General Schvantzkopf <schvantzkopf@yahoo.com> wrote:
> I have several questions about networking KVM VMs. I running CentOS5 VMs 
> on Fedora 9.

KVM has pretty much the same UI as QEMU, so you may find your questions
answered there.

Chris

General Schvantzkopf wrote:
> I have several questions about networking KVM VMs. I running CentOS5 VMs 
> on Fedora 9.
> 
> 1) How do you setup Host Only networking in KVM? 

No idea, in general I'm going the other way and fighting with getting 
connections INTO a VM. :-(

> 2) Does KVM support multiple subnets? If so how do you specify the IP 
> address of a KVM subnet?

Yes, take a look at the qemu docs. I haven't done it in over a year and 
one quick try didn't work, so I'll leave you with that, it certainly can 
be done.

> 3) Does KVM support shared directories (i.e. host directories that can be 
> mounted as partitions in the VM)? If so how do you set them up?
> 
You could specify making a partition or device available to the VM as a 
device, but the safest way is to NFS mount it, so you don't get multiple 
machines stepping on each other.

On Tue, 24 Jun 2008 15:04:46 -0400, Bill Davidsen wrote:

> General Schvantzkopf wrote:
>> I have several questions about networking KVM VMs. I running CentOS5
>> VMs on Fedora 9.
>> 
>> 1) How do you setup Host Only networking in KVM?
> 
> No idea, in general I'm going the other way and fighting with getting
> connections INTO a VM. :-(
> 
>> 2) Does KVM support multiple subnets? If so how do you specify the IP
>> address of a KVM subnet?
> 
> Yes, take a look at the qemu docs. I haven't done it in over a year and
> one quick try didn't work, so I'll leave you with that, it certainly can
> be done.
> 
>> 3) Does KVM support shared directories (i.e. host directories that can
>> be mounted as partitions in the VM)? If so how do you set them up?
>> 
> You could specify making a partition or device available to the VM as a
> device, but the safest way is to NFS mount it, so you don't get multiple
> machines stepping on each other.

I've decided to hold off on KVM for a few months at least and stick with 
VMware. In fact I think I'm going to buy a VMware Workstation license 
when my trial license expires. The raw performance of KVM is better than 
VMware if you don't use any virtual IO and it's integrated into the Linux 
Kernel so it's worth keeping an eye on. However it's very immature. It 
has almost no tools and those that are there don't work very well. On the 
other hand VMware is very easy to configure and use. VMware is not 
integrated into Linux so it's a less convenient then it could be but it's 
still way easier to use then KVM in it's current state. By the time 
Fedora 10 comes out I'm hoping that KVM will have reached the usable 
state.